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Finding the Fourth Proportional to 659,393.72, 910,012.20 and 369,034.38

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Solution

The fourth proportional to 659,393.72, 910,012.20 and 369,034.38 is: 509,294.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,393.72 : 910,012.20 = 369,034.38 : x
  2. Step 2: Convert to fraction form
    659,393.72/910,012.20 = 369,034.38/x
  3. Step 3: Cross multiply
    659,393.72x = 910,012.20 × 369,034.38
  4. Step 4: Simplify right side
    659,393.72x = 335,825,788,019.44
  5. Step 5: Solve for x
    x = 335,825,788,019.44/659,393.72
  6. Step 6: Final answer
    x = 509,294.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.